Chaos in driven Alfvén systems: unstable periodic orbits and chaotic saddles by A. C.-L. Chian, W. M. Santana, E. L. Rempel, F. A. Borotto, T. Hada, Y. Kamide

“…The chaotic dynamics of Alfvén waves in space plasmas governed by the derivative nonlinear Schrödinger equation, in the low-dimensional limit described by stationary spatial solutions, is studied. …”
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Ponderomotive effects in magnetospheric hydromagnetic waves (*) by W. Allan, J. R. Manuel

“…This should lead to limitation of density enhancements and, notably in the case of standing Alfvén waves, to spatial harmonic generation, secularly growing frequency shifts, and saturation of driven wave fields. …”
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Critical balance in magnetohydrodynamic, rotating and stratified turbulence: towards a universal scaling conjecture by Nazarenko, S, Schekochihin, A

“…It is also argued that the k -2 spectra seen in recent numerical simulations of low-Rossby-number rotating turbulence may be analogous to the k -3/2 spectra of the numerical MHD turbulence in the sense that they could be explained by assuming that fluctuations are polarised (aligned) approximately as inertial waves (Alfvén waves for MHD). © 2011 Cambridge University Press.…”

Theory and Transport of Nearly Incompressible Magnetohydrodynamic Turbulence: High Plasma Beta Regime by Laxman Adhikari, Gary P. Zank, Bingbing Wang, Lingling Zhao, Daniele Telloni, Alex Pitna, Merav Opher, Bishwas Shrestha, David J. McComas, Katariina Nykyri

“…The leading-order term in a β ≫ 1 plasma is fully incompressible and admits both structures (flux ropes or magnetic islands) and slab (Alfvén waves) fluctuations. This paper couples the NI MHD turbulence transport equations with three fluid (proton, electron, and pickup ion) equations, and solves the 1D steady-state equations from 1–75 au. …”
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On the role of collective interactions in asymmetric ring current formation by P. A. Bespalov, A. G. Demekhov, A. Grafe, V. Yu. Trakhtengerts

“…It is shown that the cyclotron interaction of westward drifting energetic protons with Alfven waves in the evening-side plasmaspheric bulge region leads to the formation of a ring current asymmetry located near 18:00 MLT. …”
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Exact shearing box solutions of magnetohydrodynamic flows with resistivity, viscosity and cooling by Lesaffre, P, Balbus, S

“…In the limit of zero shear, we recover the result that torsional Alfvén waves are exact solutions of the non-linear equations. …”

THE CURRENT STATE OF THE THEORY OF PC1 RANGE ULF PULSATIONS IN MAGNETOSPHERIC PLASMA WITH HEAVY IONS: A REVIEW by O.S. Mikhailova, D.Yu. Klimushkin, P.N. Mager

“…We note that ion-ion hybrid waves, in contrast to Alfvén waves, have a large parallel component of the magnetic field. …”
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Dissipation and wave-ion interaction in the solar wind: Links between fluid and kinetic theory by E. Marsch

“…Based on quasilinear theory, a set of anisotropic, multi-component fluid equations is derived, which describe the wave-particle interactions of ions with Alfvén waves and ion-cyclotron waves or magnetosonic waves propagating along the mean magnetic field. …”
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Elasticity of tangled magnetic fields by Hosking, DN, Schekochihin, AA, Balbus, SA

“…Furthermore, a tangled field should support the propagation of ‘magnetoelastic waves’, the isotropic analogue of Alfvén waves on a straight magnetic field. Here, we study magnetoelasticity in the idealised context of an equilibrium tangled field configuration. …”

Observation of Alfvén Ion Cyclotron Waves in ICME Magnetic Clouds at 1 au by Omkar Dhamane, Vinit Pawaskar, Anil Raghav, Zubair Shaikh, Raffaella D’Amicis, Kalpesh Ghag, Kishor Kumbhar, Daniele Telloni, Georgios Nicolaou, Prathmesh Tari, Robert Wicks, Utsav Panchal, Bhagyashri Sathe, Prachi Pathare

“…We suggest that AIC waves are possibly triggered by (i) proton temperature anisotropy Tp _⊥ / Tp _∥ > 1 driven by cyclotron instability and (ii) low-frequency Alfvén waves through the magnetohydrodynamic turbulent cascade. …”
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Reacceleration of Galactic Cosmic Rays beyond the Knee at the Termination Shock of a Cosmic-Ray-driven Galactic Wind by Payel Mukhopadhyay, Enrico Peretti, Noémie Globus, Paul Simeon, Roger Blandford

“…CRs from Galactic sources, such as supernova remnants, which are coupled to the plasma via Alfvén waves, provide the main pressure source for driving this outflow. …”
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Identification of broad-band waves above the auroral acceleration region: Cluster observations by M. Backrud, M. Backrud, M. André, M. André, A. Balogh, S. Buchert, N. Cornilleau-Wehrlin, A. Vaivads

“…These emissions are closely associated with low-frequency Alfvén waves, indicating a possible generation mechanism.…”
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Spectral Approach to Plasma Kinetic Simulations Based on Hermite Decomposition in the Velocity Space by Vadim Roytershteyn, Gian Luca Delzanno

“…With only 4 Hermite modes per velocity dimension, the algorithm yields damping rates of kinetic Alfvén waves with accuracy of 50% or better, which is sufficient to obtain a model of kinetic scales capable of reproducing many of the expected statistical properties of turbulent fluctuations. …”
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Ion versus electron heating in compressively driven astrophysical gyrokinetic turbulence by Kawazura, Y, Schekochihin, AA, Barnes, M, TenBarge, JM, Tong, Y, Klein, KG, Dorland, W

“…Analysis of phase-space spectra shows that the energy transfer from inertial-range compressive fluctuations to sub-Larmor-scale kinetic Alfvén waves is absent for both low and high βi, meaning that the compressive driving is directly connected to the ion-entropy fluctuations, which are converted into ion thermal energy. …”

Properties of the Turbulence and Topology in a Turbulent Magnetic Reconnection by W. Z. Zhang, H. S. Fu, J. B. Cao, Z. Wang, Y. Y. Liu

“…Our results reveal that in turbulent magnetic reconnection: (1) cyclotron resonance, an important mechanism of energy dissipation, is more effective in the core region of the reconnection than in the outflow regions; (2) energy is deposited in the form of kinetic Alfvén waves (KAWs) and fast/slow waves, with KAWs corresponding to low-frequency (ion cyclotron scale) and fast/slow waves corresponding to high-frequency (low-hybrid scale); and (3) the number of spiral nulls (O-lines) were about 3.6 times more than radial ones (X-lines), and three-dimensional structures were about 8 times more prevalent than two-dimensional ones. …”
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Estimating random transverse velocities in the fast solar wind from EISCAT Interplanetary Scintillation measurements by A. Canals, A. Canals, A. R. Breen, L. Ofman, P. J. Moran, R. A. Fallows

“…This last parameter is of particular interest, as it can indicate the flux of low-frequency Alfvén waves, and the dissipation of these waves has been proposed as an acceleration mechanism for the fast solar wind. …”
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Magnetic Reconnection as the Driver of the Solar Wind by Nour E. Raouafi, G. Stenborg, D. B. Seaton, H. Wang, J. Wang, C. E. DeForest, S. D. Bale, J. F. Drake, V. M. Uritsky, J. T. Karpen, C. R. DeVore, A. C. Sterling, T. S. Horbury, L. K. Harra, S. Bourouaine, J. C. Kasper, P. Kumar, T. D. Phan, M. Velli

“…Each event arises from small-scale reconnection of opposite-polarity magnetic fields producing a short-lived jet of hot plasma and Alfvén waves into the corona. The discrete nature of these jetlet events leads to intermittent outflows from the corona, which homogenize as they propagate away from the Sun and form the solar wind. …”
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Non-ideal magnetohydrodynamics on a moving mesh by Marinacci, Federico, Vogelsberger, Mark, Kannan, Rahul, Mocz, Philip, Pakmor, Rüdiger, Springel, Volker

“…We test our implementation against problems of increasing complexity, such as one- and two-dimensional diffusion problems, and the evolution of progressive and stationary Alfven waves. On these test problems, our implementation recovers the analytic solutions to second-order accuracy. …”
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Non-ideal magnetohydrodynamics on a moving mesh by Marinacci, Federico, Vogelsberger, Mark, Kannan, Rahul, Mocz, Philip, Pakmor, Rüdiger, Springel, Volker

“…We test our implementation against problems of increasing complexity, such as one- and two-dimensional diffusion problems, and the evolution of progressive and stationary Alfven waves. On these test problems, our implementation recovers the analytic solutions to second-order accuracy. …”
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Kinetic Alfvén solitary waves in a low-β plasma with regularized kappa-distributed electrons by Wedad Albalawi, Muhammad Khalid, C. G. L. Tiofack, S. A. El-Tantawy

“…This study examines the characteristics of small-amplitude kinetic Alfvén waves (KAWs) in a typical magnetoplasma, where both ions and electrons are considered to have a regularized kappa distribution (RKD). …”
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